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Now showing items 21-30 of 79
Coastal upwelling and seasonal variation in phytoplankton biomass in the Pemba Channel
(African Journals Online, 2021-02-11)
This study was conducted in the Pemba Channel off Tanga Region in northern Tanzania to investigate physical and
chemical factors that drive changes in phytoplankton biomass. Three transects off Mwaboza, Vyeru and Sahare ...
A Review on Contaminants of Emerging Concern in the Environment: A Focus on Active Chemicals in Sub-Saharan Africa
(MDPI, 2021-12-22)
: Active chemicals are among the contaminants of emerging concern that are rarely covered
in regulatory documents in sub-Saharan Africa. These substances are neither in the list of routinely
monitored substances nor in ...
Below the Radar: Data, Narratives and the Politics of Irrigation in Sub-Saharan Africa
(Water Alternatives, 2021-06)
Emerging narratives call for recognising and engaging constructively with small-scale farmers who have a leading role in shaping the current irrigation dynamics in sub-Saharan Africa. This paper explores whether new ...
A survey of irrigation water and soil quality that likely impacts paddy rice yields in Kilimanjaro, Tanzania
(Springer Nature Switzerland AG., 2021-11-29)
In this study, the impacts of irrigation water quality and soil characteristics on paddy rice yields were investigated.
Standard spectroscopy and spectrometry methods were used to analyze irrigation water and irrigated ...
Isotopic and hydrogeochemical characterization of groundwater and surface water from a mine site in Tanzania
(IWA Publishing, 2021-12-04)
This study used the hydrochemical properties of water to reveal the causes of water quality degradation. The results showed that most samples located downstream of the mine tailings dam were slightly acidic with pH as low ...
Sub- and Supercritical Water Gasification of Rice Husk: Parametric Optimization Using the I-Optimality Criterion.
(ACS Publications, 2021-05-18)
In this study, rice husk biomass was gasified under sub- and supercritical water conditions in an autoclave reactor. The effect of temperature (350-500 °C), residence time (30-120 min), and feed concentration (3-10 wt %) ...
Health Risk Assessment of Trace Elements in Soil for People Living and Working in a Mining Area
(Hindawi, 2021-07-02)
The present study used soils collected from a small-scale gold mine area to determine the health risks due to trace elements to the at-risk population in the study area. The work involved 74 soil samples from four sampling ...
Water Boiling Test of carbonized briquettes produced from charcoal fines using African Elemi (Canarium schweinfurthii) resin as an organic binder
(Springer Nature Switzerland AG., 2021-10-10)
The study evaluated carbonized briquettes produced from charcoal fines using African Elemi (Canarium schweinfurthii) resin as a binder. Briquette samples (B25, B30, B35, B40) with the ratio of charcoal fines:binder of 3:1, ...
Production of carbonized briquettes from charcoal fines using African Elemi (Canarium Schweinfurthii) resin as an organic binder
(Taylor & Francis Group, 2021-09-25)
This study investigated the use of African Elemi (Canarium Schweinfurthii) resin as a binder for the production of carbonized briquettes from charcoal fines. The binder and charcoal fines were characterized through proximate ...
Capacitive deionization: a promising technology for water defluoridation: a review
(IWA Publishing, 2021-08-30)
Capacitive deionization (CDI) is among the promising technologies employed for water purification. CDI has been studied for the removal of
various ionic species from water including fluoride ion (F ) with promising results. ...